Unreliability in the social environment influences an individual to mistrust their peers. Lying is categorized as intentionally promoting a false statement in order to deceive others. Impulsivity is defined as making rash choices without prior thought. No previous research has investigated reliability in tandem with its effects on lying and impulsivity. Most investigations in this area have focused on lying or impulsivity individually without examining the relationship between the pair of attributes. Additionally, research exploring this potential relationship in children is necessary. Childhood, ages 5 to 10, is a key developmental stage in a person’s life. These developmental years have been shown to influence behavior and mature choices in both adolescence and adulthood. It was hypothesized that reliability in the environment affects a child’s tendency to lie, make impulsive choices, and develop techniques for deception and decision making. Children ages 5 to 10 were randomly assigned to two different groups (reliable and unreliable). Each child individually responded to a variety of behavioral tasks which measured their propensity to lie and make impulsive decisions utilizing the marshmallow task, moral disengagement task and lying vignettes. This research found that when a child was placed in an unreliable environment, they lack self-control and lie when confronted by a peer. Children tend to have a strong grasp on morality regardless of what type of condition they are placed in. Additionally, children lack the ability to form memories, which prevents them from recalling how many lies they have told in the past.